| Bletchley to Popovo | 1,378.74 mi (2,218.87 km) |
| Bletchley to Provadia | 1,434.80 mi (2,309.08 km) |
| Bletchley to Radnevo | 1,409.48 mi (2,268.34 km) |
| Bletchley to Radomir | 1,279.18 mi (2,058.64 km) |
| Bletchley to Rakitovo | 1,348.84 mi (2,170.75 km) |
| Bletchley to Rakovski | 1,370.91 mi (2,206.27 km) |
| Bletchley to Razgrad | 1,383.18 mi (2,226.01 km) |
| Bletchley to Razlog | 1,328.85 mi (2,138.58 km) |
| Bletchley to Ruse | 1,348.66 mi (2,170.46 km) |
| Bletchley to Samokov | 1,312.44 mi (2,112.17 km) |
| Bletchley to Sandanski | 1,335.72 mi (2,149.64 km) |
| Bletchley to Sevlievo | 1,346.04 mi (2,166.25 km) |
| Bletchley to Shumen | 1,410.21 mi (2,269.51 km) |
| Bletchley to Silistra | 1,391.60 mi (2,239.57 km) |
| Bletchley to Sliven | 1,409.80 mi (2,268.85 km) |
